I had been using a product that irritated my scalp and decided to purchase the Tea Tree Calming Shampoo to help get my scalp back to normal. Unfortunately, after using this shampoo for two weeks it ended up irritating my scalp too. That's unfortunate, since that's exactly what it's supposed to be help clear up, not causing it. I started using a different calming shampoo and my scalp has since gone back to normal, so it was definitely the shampoo and not some other factor. I did like the smell and my hair felt very healthy using this shampoo. So, for those with less sensitive scalps this may be a great product.